The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Apr. 07, 2005
Tiziano Tanaglia, Bologna, IT;
Tiziano Tanaglia, Bologna, IT;
Polimeri Europa S.p.A., Brindisi, IT;
Abstract
A process is described to modify the rheology of EP(D)M copolymers optionally mixed with polyalpha-olefins, which comprises treating in high shear conditions a polymeric mixture comprising one or more EP(D)M polymers, optionally mixed with polyalpha-olefins, in presence of one or more vinyl multifunctional monomers and of one or more hydroperoxides, with the amount of vinyl multifunctional monomer comprised between 0.02 and 2.0 by weight, preferably between 0.05 and 1% by weight, with the molar ratio between the vinyl monomer and hydroperoxide being comprised between 0.005/1 and 2/1, preferably between 0.01/1 and 1/1, said process being performed at a temperature between 75° C. and 260° C., preferably between 140° C. and 210° C.